Wind power generator set and a transmission belt speedup driving device thereof.

ABSTRACT

A transmission belt speedup driving device of wind power generator set, includes a frame; a generator and speedup driving device mounted on a stand. The said speedup transmission belt device mounts between the other end of a spindle and the said generator, wherein a first level pulley of the said transmission belt device connects with an axle wind wheel through a coupling.

FIELD OF TECHNOLOGY

The present invention relates to a technology for generating power byutilizing the wind power energy, and a transmission belt speedup drivingdevice of wind power generator set.

BACKGROUND OF THE INVENTION

To meet the use requirements of human beings on wind power and enhanceenvironmental protection, wind power as the substitute energy for coal,petroleum and other fossil energy sources, and as a renewable energy, isgenerally regarded by all countries. Wind power industry has also beenregarded by all countries, and is now undergoing a rapid development.Currently, the speedup transmission between the wind wheel and thegenerator of the wind power generator is finished through a gear case,but the gear case is the part with frequent failures of the wind powergenerator. Generally, the weight of the gear case is more than ten todozens of tons and the stand is more than 10 m or 100 m above theground, once the failure occurs, it is quite hard to maintain andreplace the parts, and the maintenance cost is also quite high. With thefast development of large wind power generator set, the gear casebecomes bigger and heavier increasingly, which causes inconvenience fortransportation and lifting at the same time. The gear case is anindispensable part of the wind power generator, which increases the costof wind power generator due to high precision and expensive price.

SUMMARY OF THE INVENTION

It is an object of the present invention to provide a transmission beltspeedup driving device of wind power generator, which is used forcompleting the speedup between the wind wheel and the generator of thewind power generator set, thereby reducing the generating cost andimproving service life.

The aforesaid object can be realized through the following technicalproposal:

-   -   A transmission belt speedup driving device of wind power        generator set, comprising a frame; a generator mounted on the        said frame; a set of transmission belt speedup driving device        connected with the input end of the said generator; a first        level pulley of the said transmission belt device connected with        an axle of wind wheel through a coupling.    -   For the said transmission belt speedup driving device of wind        power generator set, the said transmission belt speedup driving        device is 1-4 sets of transmission belt mechanism composed of        transmission belt(s) and pulley(s), the diameter of a driven        pulley is less than that of a driving pulley, and transmission        mechanisms are connected through a coupling, and the said        transmission belt is provided with a tensioner.    -   For the said transmission belt speedup driving device of wind        power generator set, the said transmission belt is an arc-gear        synchronous belt, or a T type synchronous belt, or a V-ribbed        belt, or a banded belt.

Beneficial Effects of the Present Invention

1. Blades are fixed on a wheel hub, namely being the wind wheel, whichis fixed on a spindle. Under the action of wind, the blades rotatedriven by the wind to drive the spindle to rotate at the same time.Under the action of a coupling, the kinetic energy is transmitted to afirst level driving pulley to drive the driven pulley under the actionof a transmission belt, with the diameter of the driving pulley largerthan that of the driven pulley, to realize the purpose of speedup. Thedriven pulley transmits the kinetic energy after speedup to a secondlevel transmission system which further transmits the kinetic energyafter speedup to the third level transmission system through anotherspeedup; the third level transmission system carries out the speedupagain and then transmits the kinetic energy to the generator, so as torealize a purpose of full process speedup transmission. The diameter forthe driving pulley of the above each level of transmission system islarger than that of the driven pulley, to realize speedup transmission.The speedup belt transmission system can be either a single leveltransmission or a multi-level transmission according to the need.Replacing the prior gear case transmission by the speedup belttransmission can reduce the cost of the wind power generator; meanwhile,the speedup belt transmission has the advantages of reducing vibrationof the generator set, enhancing the service life and decreasing thenoise of the generator set, etc.

2. The whole transmission system of the present invention uses thetransmission belt for transmission. The transmission belt speedupdriving device can either adopt single level transmission or multi-leveltransmission to meet the requirements of the power generator. Thediameter of the driving pulley is larger than that of the driven pulleyto realize the purpose of speedup, to reduce the expensive gear case,thereby realizing low cost of the transmission system. The cost oftransmission belt speedup driving device can reduce the cost of the windpower generator set, which will have good effect on promoting thedevelopment of wind power.

3. The product of the present invention reduces the weight on thetransmission part, and the transmission belt is made according tospecial specification and material. Compared with the prior gear casetransmission, the device has the advantages of light weight, low failurerate, easy installation and replacement, and can greatly reduce the costof the wind power generator set.

4. The belt transmission is convenient for maintenance and replacement,and the maintenance cost is lower than that of the traditional gearcase. With the rapid development of large wind power generator set, theproduct of the present invention appears to be more convenient intransportation and lifting.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic view of the product

Part Number in the figure: 1. generator frame, 2. generator, 3.coupling, 4. bearing box, 5. transmission belt, 6. driven pulley, 7.axle of driven pulley, 8. axle of second level driving pulley, 9.bearing box, 10. second level driving pulley, 11. transmission belt, 12.coupling, 13. driven pulley, 14. transmission belt, 15. bearing box, 16.axle of driven pulley, 17. tensioner, 18. wheel hub, 19. blades, 20.spindle, 21. frame, 22. bearing box, 23. coupling, 24. axle of firstlevel driving pulley, 25. frame, 26. first level driving pulley, 27.

SPECIFIC IMPLEMENTATION METHOD Embodiment 1

The present invention enumerates a three-level speedup mechanism, whichcan only comprise the first level or the second level during the use, orincrease the fourth level or more levels, and the attached structure isonly an embodiment of the invention. The embodiment includes a generatorframe 1; a generator 2; a coupling 3; a bearing box 4; a transmissionbelt 5 which is an arc-gear synchronous belt, or a T type synchronousbelt, or a V-ribbed belt or a banded belt, or other types of beltsadopted; an axle of driven pulley 6 and an axle of driven pulley 7 inthe first level transmission part; an axle of second level drivingpulley 8; a bearing box 9, a second level driving pulley 10; atransmission belt 11; a coupling 12; a driven pulley 13; a drivingpulley 14; a bearing box 15; an axle of driven pulley 16, a tensioner17; a wheel hub 18; blades 19; a spindle 19; a spindle 20; a frame 21; abearing box 22; a coupling 23; an axle of first level driving pulley 24;a frame 25; a first level driving pulley 26; a bearing box 27; a tower28; an axle of driven pulley 29; a driven pulley 30; a frame 31; abearing box 32; a coupling 33; a third level driving pulley 34; a frame35; a bearing box 36; an axle of third level driving pulley 37; a stand38; a tensioner 39; and a tensioner 40.

The blades 19 are connected with the wheel hub 18, and two bearing boxes22 is respectively mounted on the left and right of the spindle 20 andfixed on the frame 21; one end of the spindle is fastened on the wheelhub 18, while the other end is connected with the coupling 23 which isconnected with the axle of first level driving pulley 24 to realize thekinetic energy transmission; the first level driving pulley 26 is fixedon the axle of first level driving pulley 24 on which two bearing boxes27 is mounted respectively on the left and right and fixed on the frame25; the driven pulley 13 is fixed on the axle of driven pulley 16 onwhich two bearing boxes 15 is mounted respectively on the left and rightand fixed on the frame 25; the first level driving pulley 26 isconnected with the driven pulley 13 through the transmission belt 14,and can realize speedup transmission; the two ends of the tensioner 17are fixed on the frame 25 and used for tensioning the transmission belt14; one end of the coupling 12 is connected with the axle of drivenpulley 16, while the other end is connected with the axle of secondlevel driving pulley 8 to realize kinetic energy transmission.

The second level driving pulley 10 is fixed on the axle of second leveldriving pulley 8 on which two bearing boxes 9 is mounted respectively onthe left and right and fixed on the frame 31; the second level drivingpulley 10 is connected with the driven pulley 30 through thetransmission belt 11, and can realize the speedup transmission; the twoends of the tensioner 39 are fixed on the frame 31 and used fortensioning the transmission belt 11; the driven pulley 30 is fixed onthe axle of driven pulley 29 on which two bearing boxes 32 isrespectively mounted on the left and right and fixed on the frame 31;one end of the coupling is connected with the axle of driven pulley 29,while the other end is connected with the axle of third level drivingpulley 37 to realize transmission; the third level driving pulley 34 isfixed on the axle of third driving pulley 37 on which two bearing boxes36 is mounted respectively left and right and fixed on the frame 35; thethird level driving pulley 34 is connected with the driven pulley 6through the transmission belt 5 to realize speedup transmission; the twoends of the tensioner 40 are respectively fixed on frame 35 to be usedfor tensioning the transmission belt 5; the driven pulley 6 is fixed onthe axle of driven pulley 7 on which two bearing boxes 4 is mountedrespectively on the left and right and fixed on the frame 34; one end ofcoupling 3 is connected with the axle of driven pulley 7 and the otherend is connected with generator 2 to realize kinetic energytransmission, and finally realize power generating; the generator 2 isfixed on the frame 1, while the frame 35, the frame 31, the frame 25,the frame 21 and the frame 1 are respectively fixed on the stand 38which is mounted on the tower 28.

1-3. (canceled)
 4. A wind power generator comprising: a tower; a stand mounted on the top of the tower; blades fixed on a wheel hub; a spindle with one end connected with the wheel hub, which is supported by a bearing box mounted on the stand; a generator provided on the stand; and a speedup transmission belt device mounted between the other end of the spindle and a generator, the speedup transmission belt device is provided with a single level speed increasing mechanism, wherein, the spindle is connected with an axle of driving pulley of the speedup mechanism by means of a coupling, and the generator is connected with an axle of driven pulley of the speedup mechanism by means of another coupling.
 5. The wind power generator as set forth in claim 4, wherein the speedup mechanism further comprises: A frame fixed on the stand; A first bearing box mounted on the axle of driving pulley and fixed on the frame; a driving pulley fixed on the axle of driving pulley; a second bearing box mounted on an axle of driven pulley and fixed on the frame; a driven pulley fixed on the axle of driven pulley; and a transmission belt connected with the driving pulley and the driven pulley.
 6. The wind power generator as set forth in claim 5, wherein the speedup mechanism further comprises a tensioner fixed on the frame and acting on the outside of the transmission belt to automatically tighten the transmission belt.
 7. The wind power generator as set forth in claim 6, wherein the driving pulley and the driven pulley are engaged with the transmission belt, and the transmission belt is an arc-gear synchronous belt or T type synchronous belt or V-ribbed belt or banded belt.
 8. A wind power generator comprising: a tower; a stand mounted on the top of the tower; blades fixed on the wheel hub; a spindle with one end connected with the wheel hub, which is supported by the bearing box mounted on the stand; a generator provided on the stand; and a speedup transmission belt device mounted between the other end of the spindle and a generator, the speedup transmission belt device is provided with a multi-level speedup mechanism, wherein the spindle is connected with an axle of driving pulley at the first level of the multi-level speedup mechanism, and the generator is connected with an axle of driven pulley at the last level of the multi-level speedup mechanism.
 9. The wind power generator as set forth in claim 8, wherein each level of the multi-level speedup mechanism respectively comprises: a frame fixed on the stand; a first bearing box fixed on the frame; an axle of driving pulley mounted on the first bearing box; a second bearing box fixed on the frame; an axle of driven pulley mounted on the second bearing box; a driving pulley fixed on the axle of driving pulley; the driven pulley fixed on the axle of driven pulley; and a transmission belt connected to the driving pulley and the driven pulley.
 10. The wind power generator as set forth in claim 9, wherein each level speedup mechanism further comprises the tensioner fixed on the frame and acting on the outside of the transmission belt to tighten the transmission belt automatically.
 11. The wind power generator as set forth in claim 10, wherein the transmission belt which are engaged with the driving pulley and the driven pulley are arc-gear synchronous belt or T type synchronous belt or V-ribbed belt or banded belt.
 12. The wind power generator as set forth in claim 9, wherein, in the multi-level speedup mechanism, the axle of driven pulley of the previous level speedup mechanism are connected with the axle of driving pulley of the next level speedup mechanism.
 13. A transmission belt speedup driving device of a wind power generator comprising: a stand; a generator mounted on the stand; a wind power driving device mounted on the stand through a bearing box, which comprises blades, a wheel hub and a spindle; a speedup transmission belt device mounted between the spindle and the generator; the speedup transmission belt device is provided with a speedup mechanism, wherein the spindle is connected with an axle of driving pulley of the speedup mechanism through a coupling, and the generator is connected with an axle of driven pulley of the speedup mechanism through another coupling.
 14. The transmission belt speedup driving device of wind power generator as set forth in claim 13, wherein the speedup mechanism further comprises: a frame fixed on the stand; a first bearing box mounted on an axle of driving pulley and fixed on the frame; a driving pulley fixed on the axle of driving pulley; a second bearing box mounted on an axle of driven pulley and fixed on the frame; a driven pulley fixed on the axle of driven pulley; and a transmission belt connected with the driving pulley and the driven pulley.
 15. The transmission belt speedup driving device of wind power generator as set forth in claim 14, wherein the speedup mechanism is further provided with a tensioner which is fixed on the frame and acts on the outside of the transmission belt to tighten the transmission belt automatically.
 16. The transmission belt speedup driving device of wind power generator as set forth in claim 14, wherein the transmission belt which is engaged with the driving pulley and the driven pulley is an arc-gear synchronous belt, a T type synchronous belt, a V-ribbed belt or a banded belt.
 17. A wind power generator comprising: a tower; a stand mounted on the top of the tower; blades fixed on a wheel hub; a spindle with one end connected with the wheel hub, which is supported by a bearing box mounted on the stand; a generator provided on the stand; a speedup transmission belt device mounted between the other end of the spindle and a generator, wherein the speedup transmission belt device is provided with a speedup mechanism, the speedup mechanism comprising: a frame fixed on the stand; a first bearing box fixed on the frame; an axle of driving pulley mounted on the first bearing box; a second bearing box fixed on the frame; an axle of driven pulley mounted on the second bearing box; a driving pulley fixed on the axle of driving pulley; a driven pulley fixed on the axle of driven pulley; and A transmission belt connected with the driving pulley and the driven pulley; a tensioner fixed on the frame and acting on the outside of the transmission belt to automatically tighten the transmission belt. Wherein the spindle is connected with the axle of driving pulley through a coupling, and the generator is connected with an axle of driven pulley through another coupling.
 18. A wind power generator comprising: a tower; a stand mounted on the top of the tower; blades fixed on the wheel hub; a spindle with one end connected with the wheel hub, which is supported by the bearing box mounted on the stand; a generator provided on the stand; and a speedup transmission belt device mounted between the other end of the spindle and a generator, the speedup transmission belt device is provided with a multi-level speedup mechanism, wherein, the spindle is connected with an axle of driving pulley at the first level of the multi-level speedup mechanism by means of a coupling, and the generator is connected with an axle of driven pulley at the last level of the multi-level speedup mechanism by means of a coupling.
 19. The wind power generator as set forth in claim 18, wherein each level of the multi-level speedup mechanism respectively comprises: a frame fixed on the stand; a first bearing box fixed on the frame; an axle of driving pulley mounted on the first bearing box; a second bearing box fixed on the frame; an axle of driven pulley mounted on the second bearing box; a driving pulley fixed on the axle of driving pulley; the driven pulley fixed on the axle of driven pulley; and a transmission belt connected to the driving pulley and the driven pulley; wherein, in the multi-level speedup mechanism, the axle of driven pulley of the previous level speedup mechanism are connected with the axle of driving pulley of the next level speedup mechanism by means of a coupling.
 20. The wind power generator as set forth in claim 19, wherein each level speedup mechanism further comprises the tensioner fixed on the frame and acting on the outside of the transmission belt to tighten the transmission belt automatically.
 21. The wind power generator as set forth in claim 20, wherein the transmission belt which are engaged with the driving pulley and the driven pulley are arc-gear synchronous belt or T type synchronous belt or V-ribbed belt or banded belt. 